Stackoverflow without recursion

[Rao Raghu]

Hi, I had posted earlier with an overview of my StackOverFlow Error problem. Now I have got some clues in this. The servlet is throwing a Stackoverflow error at Properties.getProperty() method. I know that stackoverflow occurs as a result of recursions. But I am not making any recursive calls in my code. I don't know why this error is bugging me. The code segment and the exceptions are listed below:

 
private String getURL()
    {
        Object obj = null;
        Object obj1 = null;
        String s = null;
        String s1 = (new StringBuilder()).append("/config").append(File.separator).append("testclient.properties").toString();
        try
        {
            java.io.InputStream inputstream = com/dnb/golf/client/XMLProcessorServlet.getResourceAsStream(s1);
            Properties properties = new Properties();
            properties.load(inputstream);
            s = properties.getProperty("service.location");
            serviceNamespace = properties.getProperty("service.namespace");
            responseTS = properties.getProperty("response.timestamp");
        }
        catch(FileNotFoundException filenotfoundexception)
        {
            filenotfoundexception.printStackTrace();
        }
        catch(IOException ioexception)
        {
            ioexception.printStackTrace();
        }
        catch(Exception exception)
        {
            exception.printStackTrace();
        }
        return s;
    }
 

   

The exceptions:

   
May 15, 2007 4:20:55 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet messagerouter threw exception
java.lang.StackOverflowError
        at java.util.Hashtable.get(Hashtable.java:344)
        at java.util.Properties.getProperty(Properties.java:774)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
        at java.util.Properties.getProperty(Properties.java:776)
 

 

Any clues will be appreciated. :roll:

[Anupam Sinha]

Did you debug the application.

Why is this being printed so many times

java.util.Properties.getProperty(Properties.java:776)

[Christophe Verré]

Are you sure it's happening there ?
Is there any other places you are using Properties, using the following constructor ? Properties(Properties defaults)

[Ernest Friedman-Hill]

I agree that it must be some other call that's causing this problem, but I don't think this is your actual code in the first place. Note that this line of code wouldn't even compile:

java.io.InputStream inputstream = 
com/dnb/golf/client/XMLProcessorServlet.getResourceAsStream(s1);

[Paul Clapham]

From the API documentation for Properties:

A property list can contain another property list as its "defaults"; this second property list is searched if the property key is not found in the original property list.

So if you created a Properties object that was its own default, and you searched it for a key it didn't contain, what would happen?

[Christophe Verré]

Yep, that is why I asked if he was calling using Properties(Properties defaults) somewhere else